Rotary printing-machine.



M. R. BUNTING, J. MULDOON & L. S. SPRINGER. ROTARY PRINTING MACHINE.

' APPLICATION FILED MAY 25 1911. 1,029,847, Patented June 18, 1912.

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M. R. BUNTING, J. MULDOON & L. S. SPRINGER. ROTARY PRINTING MACHINE. APPLICATION 11.31) MAY 25, 1911.

Patnted June 18, 1912.

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COLUMBIA PLANOGRAPH CO-,WA5HXNOTON. D. c.

M. R. BUNTING, J. MULDOO N & L. S. SPRINGER. ROTARY PRINTING MACHINE.

APPLICATION FILED MAY 25, 1911.

Patented June 18, 1912.

5 SHEETS-SHEET 3.

COLUMBIA PLANOGRAPH co., WASHINGTON. D. c.

M. R. BUNTING, J. MULDOON & L. S. SPRINGER. ROTARY PRINTING MACHINE.

APPLICATIONIILEI) MAY 25, 1911.

1,029,847, 7 Patented June 18, 191 2.

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M. R. BUNTING, J. MULDOON & L. S. SPRINGER.

ROTARY PRINTING MACHINE.

APPLICATION FILED MAY 25, 1911.

1,029,847. Patented June 18, 1912.

5 SHEETSSHEET 5.

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MILLARD R. BUNTING AND JEROME MULDOON, F BALTIMORE, MARYLAND, AND LEWIS S. SPRINGER, OF WASHINGTON, DISTRICT OF COLUMBIA.

ROTARY PRINTING-MACHINE.

To all whom it may concern: Be it known that we, MILLARD R. BUNT- ING and JEROME MULDOON, residents of Baltimore city, State of Maryland, and LEWIS S. SPRINGER, a resident of the city of lVashington, District of Columbia, citizens of the United States, have invented certain new and useful Improvements in Rotary PrintingMachines, of which the following is a specification.

Our invention relates to printing machines, and especially to that class of printing machines in which the type are carried by a cylinder, known to the trade as rotary printing presses.

The object of the invention is to generally improve the construction and operation of such machines with a view to simplicity and economy in construction, rapidity and ease of operation, non-liability to disarrange ment or breakage of parts, and easy adjustment, repair and replacement of parts.

lVith this and other objects which will hereinafter appear in view, the invent-ion consists in the improved construction, arrangement and combination of parts hereinafter fully described and afterward specifically claimed.

In order that our invention may be readily comprehended, we have illustrated an embodiment of it in the accompanying drawings and will now proceed to describe its construction and operation, having reference to said drawings, in which- Figure 1 is a View of the machine in front elevation, with parts shown in section, and parts broken away; Fig. 2 is a view in side elevation, parts being shown in section, and parts broken'away; Fig. 3 is a detail view of the clutch mechanism for operating the mechanism for gripping the paper; Fig. 4 is a detail view, in side elevation, of the clutch pin; Fig. 5 is a plan view, partly in section of part of the machine showing a portion of the paper gripping mechanism and the feed table; Fig. 6 is a sectional view on line m0a of Fig. 5, with the parts to the right of that line shown in side elevation; Fig. 7 is a view in sectional elevation of the driving gear for the inking rolls;

Fig. 8 is a View in elevation, with parts broken away, of the spacing indicator; Fig. 9 is an elevation of one of the type holding bars; Figs. 10 and 11 are similar views of type-holding bars adapted to be used Specification of Letters Patent. Application filed May 25,

Patented June 18, 1912.

1911. Serial No. 629,335.

when lines of different lengths are to be printed; Fig. 12 is a sectional view on line y y of Fig. 9; Fig. 13 is a plan view, partly in section, of a portion of the type cylinder illustrating the means of locking the type bars to the cylinder; Fig. 14L is a displayed view of one edge of the type cylinder, and Fig. 15 is a view in elevation of the rear of the upper part of the mechanism illustrated in Fig. 2, partly in section on the line 1515 in that figure.

Like reference characters mark the same parts wherever they appear in any of -the figures of the drawings.

Referring specifically to the drawings, and 21 indicate the side plates of the frame, which is preferably inclosed or boX- like, and which may rest upon the floor, or any suitable support, being, in this instance shown as secured by bolts 22 to a suitable cabinet 23 provided with a shelf- 24 and drawers 25 for containing type or tools, all as best shown in Figs. 1 and 2. The side plates are secured together by suit able cross rods, as at 26, and spaced apart by tubes 27 on said cross rods between the plates, it being permissible to use as many of such cross rods and spacing tubes as may be deemed necessary to secure rigidity in the structure. 'lVe deem it preferable to thread these rodson their ends and to use thereon either ordinary nuts, or winged nuts, as at 28 on one end of the rods 26, for ease of operation in setting up or taking down the machine.

At 30 is shown the roller or rotary platen upon which the paper rests during the printing operation and which is loosely mounted on a shaft 31 secured in the plates 20 and 21.

The feed table for containing the paper is shown at 32, Figs. 5 and 6, comprising side bars 33 which are removably seated between the side plates 20 and 21, being supported by hand screws resting in horizontal notches 34 in the front edges of the side plates and carrying nuts 35 which are screwed up tightagainst said plates, the inner edge of the table being closely adjacent to the top or printing zone of the platen as at 36 in Fig. 2. The top of the table is in sections as at 37 and 38, Fig. 5, separated by one or more transverse spaces 39, in line with notches 40 in the side bars 33, in which spaces and notches slidably rest guide bars 41 secured to the under sides of gage bars 42 resting on the top of the table whereby these gage bars mag be adjusted to suit the size of the paper to e used, the adjusting of these gage bars being effected by hand screws 43 threaded through the side bars 33 of the table and having their inner ends swiveled in the gage bars as at 44.

What we term the type cylinder is shown at 45 which, however, is in this instance only about a half cylinder comprising substantially semi-circular end plates 46 and a curved plate 47 secured around said ends and serving as a bed plate to support the type bars as hereinafter described.

There are any desired number of inner semi-circular plates 48 of the same size and shape as the end plates, located between the end plates (see Fig. 13) to serve, with said end plates as supports and backing for the cylindrical bed plate 47 and a corresponding series of radial apertures 49 is formed through the plate 47 over each of the end plates 46 and intermediate plates 48, such radial apertures extending a suitable distance into said plates 46 and 48 to receive and support pins 50 secured to the bottoms 51 of the type bars 52, Figs. 9 to 13, and support the type bars in position.

When a plurality of type bars are in position, a securing bar 53, fitted in transverse openings 54, in plates 46 and 48 and provided with reduced portions 55 and conical wedge-shaped portions 56 is impelled in a direction to press the wedge portions between the pins 50 of adjacent type-bars, by means of springs 57 between its head 58 and one of the end plates 46, over movement or displacement by the spring being prevented by a pin 59 in the securing bar outside of the other end plate. In this position the wedge portions of the securing bar engage in peripheral grooves 60 in the pins 50 and thus securely hold the pins, and the type bars, in position on the cylinder with the bottoms 51 of the type bars resting snugly on the cylindrical plate 57.

The construction of the type bars is shown in Figs. 9 to 12, and besides the bottom 51, they each have sides 61, 62, forming a trough-like structure into which the type 63 are slid from the end, an inturned flange 64 at the outer edge of the side 62 engaging in corresponding grooves 65 in the type and thus preventing them drop-ping out. The resiliency of the side 62 may be suflicient to cause the flange 64 to engage with sufficient force in the grooves 65 to prevent the longitudinal displacement of the type in the type bars, or any other suitable mechanism may be used for this purpose.

The type cylinder 45 is mounted upon a shaft 66 journaled in the side plates 20 and 21 and is secured to that shaft by means of a set screw 67 and the position of the cylinder on the shaft will govern the point in the paper where the impressions will be made by the type. This point is governed by the spacing indicator 68 shown in Figs. 2 and 8, in which it will be seen that the end plate 46 of the cylinder is graduated as at 69, and a disk 70, secured by a pin 70 to a gear wheel 71 rigidly fixed on the shaft 66 and con centric therewith, is provided with a pointer 72 which coiiperates with the graduation. Any change in the relative position of the gear wheel and indicator on the one hand, and the type cylinder on the other hand, will be indicated by the pointer and may be governed thereby to cause the impressions of the type to be made nearer to or farther from the top of the sheet of paper being printed.

The pointer disk 70 is provided with an annular concentric flange 7 2 which engages in a similar groove 73 in the disk 70 and pins 74, 74 are threaded in the flange and project beyond the periphery of the disk and gear, serving as guides for a block 75 which carries teeth 76 which engage the spaces between the teeth of a circular rack 75 secured to one of the plates 46, the springs 77 are interposed between the block 75 and the flange 72, and around the pins 74, whereby the disk may be turned on the gear and secured in adjusted position. Secured in the flange, and extended through the block 75 is a pin 72, threaded at 73, upon the threaded end portion of which is secured a thumb screw 74, for the purpose of securing the block 75 in position by screwing the thumb screw on the stem the teeth 76 engage between the teeth on the rack 7 5 under compression of the springs 77. By unscrewing the thumb screw the compression on the springs is released and the block may be freely rotated on the rack 7 5.

A crank handle 8 is secured on the end of the shaft 66, by means of which the shaft, and the type cylinder carried thereby, may be rotated, although it will be obvious that this rotation may be effected by power applied to the shaft in any desired manner.

lVith the gear wheel 71 is engaged a gear wheel 79 on a shaft 8O journaled in the frame plates 20 and 21 which in turn engages apinion S1, fixed to a gear wheel 83; loosely mounted on a shaft 82 rigidly fixed in plates 20 and 21. The gear wheel 83 drives a pinion 84 on the shaft 85 of an inking roller 86, meshing with another pinion 87 on the shaft 88 of a second inking roller 89 which is thereby rotated in contact with the roller 86 to properly spread the ink in a well known manner.

The inking roller shaft 85 is journaled in the outer ends of arms 90 pivotally mounted on the shaft 82, so that the roller' 86 may be adjusted toward and from the type on the cylinder by swinging the arms 90 on the shaft 82, and one or both of these arms may be provided with securing means comprising a screw 91 projecting outward from the arm through a slot 92 in the plate 20 concentric with the shaft 82, said screw being provided wit-l1 a hand nut 93 which may be turned down tight against the plate 20 and rigidly fasten the arm in any adjusted position.

The inking roller shaft 88 is journaled in arms 94 adjustably fixed on the shaft 82, which is also rigid, as before mentioned, by means of set screws 95. Links 96 are pivotally secured on the shaft 88 and are provided with longitudinal slots 97 which embrace screws 98 projecting from the frame plates and have on them winged nut-s 99, whereby, when the arm-s 94 are adjusted on the shaft 82 and secured by the set screws 95, this fastening is complemented or reinforced by the links 96, and the arms 94 rigidly secured in position to support the roller 89 and the parts now to be described.

The arms 94 are extended above the ink ing roller shaft 88 and carry an open bottom ink hopper 100 which rests upon the inking roller 89 so that the ink is always in contact with that roller which in effect forms the bottom of the hopper.

A scraper plate 101 lies on theinner wall 102 of the hopper 100 and is vertically adjustable thereon to cause it to engage the surface of the roller 89 more or less closely, and guided in such adjustment by screws 103 passing through slots 104 into the wall 102. This plate 101 carries lugs 104 in which are secured pins 105 which pass upward through brackets 106 secured on the wall 82, said pins being threaded beyond the brackets 106 and provided with winged nuts 107 bearing on the outside of the brackets whereby the plates, by the turning of these nuts may be moved outwardly, or may be permitted to move inwardly under the stress of springs 108 coiled around the pins 105 between the lugs 104 and the brackets 106. The plate 101 is thus yieldingly pressed toward the roller 89 to the limit allowed by the nuts 107 so that it will yield, in the event there should be any lumps in the ink, in order to prevent breakage or damage to the roll, but the plate may be rigidly fixed in its adjusted position when desired, by turning the screws 103 tightly against it. The amount of ink supplied to the roller 89 is thus accurately gaged and this amount is spread upon the roller 86 by contact therewith and from thence passed to the type by the contact of the roller 86 therewith.

The gear wheel 79, Fig. 1, also meshes with a transmitting gear 110 which also engages a gear wheel 111 on a shaft 112, thus transmitting the motion of the shaft 66 of the type cylinder to said gear 111.

Adjustably fixed to the frame'plate 20 shoulders 117 and 118 between peripheral surfaces 119 and 120 (Fig. 6) at different distances from the shaft, said cam disk be ing also fixed to the shaft and a hub 120 loose on the shaft having on its periphery a hook 121 and carrying an arm 122 which projects upward and is provided at its upper end with a hollow hub 123, a similar hub being provided on the outer end of an arm 124 pivoted to the shaft near its opposite end. The arms 122, 124, have attached to them at substantially a right angle, a plate 125 which rests on the upper surface of the platen 30 and forms the lower or stationary aw of the paper clamp.

In the hubs 123 are journaled pintles 126, projecting from a plate 127, which forms the upper or movable jaw of the paper clamp, and is provided with teeth 128 through which project guard or stop pins 129 secured to the stationary jaw 125. Secured to and extending downward from the plate or movable jaw 127 is a curved arm 130 carrying a pin 131 in its lower end upon which is rotatably mounted an antifriction roller 132 which bears upon the periphery of the cam 109.

Loosely mounted on the shaft 112 is an inarms 134 projecting from the end plates 137 of the semi-cylinder, thus rigidly securing the semi-cylinder rigidly in position to catch all oil which may drip from the machine and serve as a guide for the paper clamp and paper carried thereby, as hereinafter described.

Passing through the gear wheel 111 and the peripheral earn 109 and projecting at one end in the same are of a circle surrounding the shaft as the hook 121 of the hub 120, is a pin 138 which has at its opposite end a hook 139 projecting into the cam groove 116 of the disk 115.

Upon the outer end of the shaft 112 is a heavy coiled spring 140, one end of which is secured to a collar 141 rigidly fixed to the plate 21, while its opposite end is secured to a collar 142 adjustably secured to the shaft by a set screw 143. The tendency of the spring 140 in unwinding is to turn the shaft 112 in the direction opposite to that indicated by the arrow 144 in Fig. 2.

To prepare for printing, a sheet of paper is fed over the table until its forward edge passes under a guard or guide 148, Figs. 2

and 6, and upon the lower jaw 125 of the clamp. The type cylinder is now turned bringing the type past the inking roller and into the printing zone of the platen. This rotation of the type cylinder rotates the gear 111 and the shaft 112 in the direction inclicated by the arrow 14: 1 and the pin 138 catches in the hook 121 of the hub 120 and carries the arm 122 around with it. The arm 130 is also carried around with the arm 122, and the peripheral cam causes the arm 130 to move on its pintle and clamp the edge of the paper between the two jaws of the clamp. By the time the paper clamp has moved down below the semi-cylinder, the hook 139 has reached the point in the cam groove 116 of the disk 115 which will cause the pin 138 to move to the left as the parts are shown in Fig. 3, withdrawing the pin from engagement with the hook 121 of the hub 120 The rotation of the shaft 112 to I this point has wound up the spring 1 10, and

the withdrawal of the pin 188 from engagement with the hook 121 will leave the hub free to turn back with the shaft under the stress of the unwinding of the spring 140, the first effect of which return of the hub will be to release the paper from the clamp, dropping the paper below the semi-cylinder, the clamp returning to its normal position at the top of the platen to grasp and carry around another sheet of paper.

It will thus be seen that our mechanism is exceedingly simple, and that by turning the type-cylinder shaft, all the operations will be automatically performed. The type will be inked, the paper gripped, the impression made, the paper carried around by the clamp, the paper released and dropped, and the clamp returned to normal position to grip another sheet of paper.

While we have specifically described the construction and arrangement of the various parts comprising our improved machine, it will be obvious to those skilled in the art that changes and variations may be made therein without departing from the spirit and scope of the invention.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent of the United States is:

1. The combination with a feeding table and a rotary platen at the inner edge thereof, of a shaft below the platen, arms pivoted to said shaft, a clamp embodying a fixed and a movable jaw carried at the top of said arms adjacent to the upper surface of the platen, means for oscillating said arms to carry the clamp backward and pass the paper over the platen, and means for operating the clamp, comprising a second pair of arms pivoted to the first pair, carrying the movable jaw of the clamp, a roller on an arm of the second pair, and a cam on said shaft to engage said roller.

2. The combination with atable and 'a rotary platen at the inner edge thereof, of a shaft below and parallel with the platen, a clamp embodying a fixed and a movable jaw, arms pivoted to the shaft carrying the fixed jaw of the clamp adjacent to the inner edge of the table, a cam on the shaft, a second pair of arms pivoted on the first pair and carrying the movable jaw of the clamp, said cam adapted to engage said second pair of arms to operate the movable aw, a semicylinder concentric with the first pair of arms and arranged to form a guide for the clamp and paper when the first pair of arms are oscillated, and means for oscillating the first pair of arms around the shaft.

3. The combination with a table and arotary platen at the inner edge thereof, of a shaft below and parallel with the platen, a clamp embodying a fixed and a movable jaw, arms pivoted to the shaft carrying the fixed jaw of the clamp adjacent to the inner edge .of the table, a cam on the shaft, a second pair of arms pivoted on the first'pair and carrying the movable jaw of the clamp, said cam adapted to engage said second pair of arms to operate the movable jaw, a semicylinder concentric with the'first pair of arms and arranged to form a guide for the clamp and paper when the first pair of arms are oscillated, means for oscillating the first pair of arms around the shaft, said means comprising a gear wheel on the shaft, and means for automatically engaging the first pair of arms with the gear wheel.

4. The combination with a table and a rotary platen at the inner edge thereof, of a shaft below and parallel with the platen, a clamp embodying a fixed and a movable jaw, arms pivoted to the shaft carrying the lower fixed jaw of the clamp adjacent to the inner edge of the table, a cam on the shaft, a second pair of arms pivoted on the first pair and carrying the movable jaw of the clamp, said cam adapted to engage said second pair of arms to operate the movable jaw, a semi-cylinder concentric with the first pair of arms and arranged to form a guide for the clamp and paper when the first pair of arms are oscillated, means for oscillating the first pair of arms around and a table having its inner edge adjacent to the top of the platen, of a semi-cylindrical guide or guard secured below the platen, a shaft mounted concentrically with the guide or guard, an arm pivoted on the shaft, a lower jaw of a clamp carried by the top of the arm and resting on the platen at the edge of the table, means for oscillating the arm, a second arm pivoted to the upper end of the first arm, a movable jaw of the clamp carried by the second arm, and a cam for operating the second arm to close and open the clamp during the oscillation of the first arm.

In testimony whereof we afiix our signa- 5 tures in presence of two witnesses.

MILLARD R. BUNTING. JEROME MULDOON. LEWIS S. SPRINGER. Witnesses.

E. WALTON BREWINGTON, BROWN M. ALLEN.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

Washington. D. G. 

